001/* 002 * Licensed to the Apache Software Foundation (ASF) under one or more 003 * contributor license agreements. See the NOTICE file distributed with 004 * this work for additional information regarding copyright ownership. 005 * The ASF licenses this file to You under the Apache License, Version 2.0 006 * (the "License"); you may not use this file except in compliance with 007 * the License. You may obtain a copy of the License at 008 * 009 * http://www.apache.org/licenses/LICENSE-2.0 010 * 011 * Unless required by applicable law or agreed to in writing, software 012 * distributed under the License is distributed on an "AS IS" BASIS, 013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 014 * See the License for the specific language governing permissions and 015 * limitations under the License. 016 */ 017package org.apache.wicket.extensions.markup.html.repeater.tree.nested; 018 019import org.apache.wicket.markup.ComponentTag; 020import org.apache.wicket.markup.repeater.Item; 021import org.apache.wicket.model.IModel; 022 023/** 024 * A branch is a container for a single node and its children inside a {@link Subtree}. 025 * 026 * @see Subtree#newBranchItem(String, int, IModel) 027 * 028 * @author svenmeier 029 */ 030public class BranchItem<T> extends Item<T> 031{ 032 033 private static final long serialVersionUID = 1L; 034 035 public BranchItem(String id, int index, IModel<T> model) 036 { 037 super(id, index, model); 038 039 setOutputMarkupId(true); 040 } 041 042 @Override 043 protected void onComponentTag(ComponentTag tag) 044 { 045 super.onComponentTag(tag); 046 047 if (isLast()) 048 { 049 tag.put("class", "tree-branch tree-branch-last"); 050 } 051 else 052 { 053 tag.put("class", "tree-branch tree-branch-mid"); 054 } 055 } 056 057 /** 058 * Is this the last branch in the containing subtree. 059 */ 060 protected boolean isLast() 061 { 062 return getIndex() == getParent().size() - 1; 063 } 064}